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Water-Year Summary for Site 08401900

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  • Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
  • For water years 2014 onward, choose a water year and parameter and an on-demand Water-Year Summary report will be generated.
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  • For water years 2005 and earlier, Annual Water Data Reports may be available in digital format.
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Available Parameters
00060 Discharge(Mean)  

Water year 2023: 2022-10-01 to 2023-09-30
 
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USGS Water-Year Summary 2023
08401900 ROCKY ARROYO AT HIGHWAY BRIDGE, NEAR CARLSBAD, NM
LOCATION - Lat 32°30'21.89", long 104°22'29.96" referenced to North American Datum of 1983, Eddy County, NM, Hydrologic Unit 13060011, at downstream end of bridge pier nearest left bank on U.S. Highway 285, 2.1 mi upstream from mouth, and 10 mi northwest of Carlsbad. Mouth at Pecos River mile 475.2. 
DRAINAGE AREA - 285 mi². (approximately)
SURFACE-WATER RECORDS
PERIOD OF RECORD - November 1963 to current year.
GAGE - Water-stage recorder with satellite telemetry. Elevation of gage is 3,250 ft above NGVD of 1929, from topographic map. Prior to Feb. 1985, at site 60 ft downstream at same datum.
REMARKS - Water years 2014-2020; records good except for estimated discharges, which are poor. Water year 2021; records poor. Water year 2022; records good except for estimated discharges, which are poor. Diversions for irrigation of 220 acres, upstream from station.
EXTREMES OUTSIDE PERIOD OF RECORD - Since about 1941 the maximum discharge probably occurred Oct. 7, 1954, discharge, 63,600 ft³/s, gage height, 19.2 ft, from floodmarks, on downstream end of bridge pier, by slope-area measurement at site 5 mi upstream.